Machine for and method



-F. W. SUTHERLAND.

MACHINE FOR mo METHOD OF SEALING WAXED CARTONS.

APPLICATION FILED APR. 30. I919.

1 ,3 1 6, 1 20. Patented Sept. 16, 1919.

2 SHEETSSHEET 2- UNITED STATES PATENT OFFICE.

FRED W. SU'I'HEBLAITD, OF KLLAHAZOO, HIGHIGAR.

mom FOR AND METHOD OF WAXED OABTONS.

To all whom it'may concern:

Be it known that I, FRED W. SUTHERLAND, a citizen of the United States, residing at Kalamazoo, Michigan, have invented certain new and useful Improvements in Machines for and Methods of Sealing Waxed Cartons, of which the following is a specification.

This invention relates to improvements in machines for and methods of sealing waxed cartons.

In the manufacture of cartons, it has not been found practical so far as the applicant has been able to discover to seal or oin by glue or other adhesives, even when the adhesive is specially repared forthe purpose, cartons which have been previously waterproofed by an application of paraflin wax or the like.

The main objects of this invention are:

First, to provide an improved machine for sealing waxed cartons by means of which the arts of such cartons are eifectively joine by glue.

Second, to provide an improved method of sealing waxed cartons.

Further objects, and objects relating to structural details, will definitely appear from the detailed description to follow.

I accomplish the objects of my invention by the devices and means described in the following secification. The invention is clearly de ed and pointed out in the claims.

A structure which isa preferred embodiment of my invention is clearly illustrated in the accompan ing drawin forming a. part of this specification, in w ich:

Figure I is a detail side elevation of a sealing machine embodying the features of my invention, portions of the frame bein shown in vertical section and other parts 0 the mechanism bein shown conventionally.

Fig. II is a deta' plan view of the feed conveyer of my improved sealing machine, partially in section on a line corresponding to line 22 of Figs. I and III.

Fig. III is an enlarged detail verticalsecilzj ion (in a line corresponding to line 3-3 of ig. IV is a detail transverse section on a line corresponding to line 4-4 of Fig.1, showing details of the glue applying mecha nlsm.

Fig. V is a detail transverse section on a for the sealin Heretofore, this has not been found prac- Spcciflcatlon of Letters Patent. Patented Sept. 16, 191.9. Application filed April so, me. semi neaeam.

line corresponding to line 55 of I, showingriletails ofthe folding mechanism.

Fig. is a detail transverse section on a line correspond' to line 6-6 of F I, showing further etails of the fol mechamsm.

Fig. VII is a detail transverse section on a line corresponding to line 7-7 of Fig. I, showing details of the pressing means.

In the drawing, similar reference characters refer to similar parts throughout the several views, and the sectional views are taken looking in the direction of the little arrows at the ends of the section lines.

Referring to the drawin 1 represents the frame of the machine, at t e front of' which is a hopper 2 havin delivery rollers 3. These rollers deliver t e cartons to the feed conveyer comprising a series of supporting belts 4 supported b pulleys 5 and a pair of upper presser be ts 6 supported by rollers 7 at their ends. This conveyer carries the cartons 8 along in the flat with their edges 9 and 10 projecting at the sides of the outer feed belts. The ed 9 is the sealing flap which is adapted to lapped upon the opposite edge 10.

My improvements are especially designed of paraflin waxed cartons.

tical on account of the fact that the glue would not penetrate or adhere to the surfaces to be joined, so that the joints formed were insecure and not 1practical, even when specially prepared g ue was employed. I use the term glue in its com iehensive sense.

To prepare these sur aces to receive the glue and enable making a secure joint or connection between the parts to be joined, I direct jets of steam from nozzles 11 and 12 a ainst the surfaces which are to receive the gue and coacting surfaces which are to be apped or brought face to face therewith.

By carrying the cartons along so that their edges project from the belts of the feed conveyer the belts serve as guards for the remaining surfaces of the carton, that is, the steam jets are confined to the surfaces which it is desired to treat. The cartons are delivered from the feed conveyer through the rollers 13 to the sealing conveyer consisting of the coacting belts 17 and 18, the belt 19 and the coacting rollers 20. As the cartons are carried along by the belts 17 and 18 the flaps 9 are brought into contact with Letters Patent isengaged by the rod-like folder members 22 whic swing portions of the carton to an upright position as shown in Fig. ,V, where they are engaged by the turning belts 23 and turned over until they pass under the rollers 2l'see Fig. VI, from which they fpass between the presser belts 27 and 28 mm which they are discharged to the discharge table 29..

The details of the flap turning and folding means form no part of my present invention and therefore the same are conventionally shown and are not elaborated herein.

The machine described enables the efiicient carrying out ofmy improved method which consists in the driving ofi or removing the greater portion of the wax on the surfaces to be glued together by impinging ]8tS of steam, hot air or other suitable means, applying the glue and pressing the surfaces together.

I have not attempted to illustrate various means or adaptations by which this may be carried out, but I have shown the same as I have embodied it in practical use in the manufacture of cartons, in one type of sealing machine.

By my improved method and apparatus, I am enabled to rapidly seal waxed cartons so that the joint is substantially as secure as though formed on untreated material.

Having thus described my invention, what I claim as new and desire to secure by 1. In a machine for sealing waxed cartons,

having a sealing flan at one edge adapted to be lapped upon the opposite edge, the combination of a carton feeding means com rising pairs of opposed belts between w ich the carton is carried in the flat with its sealing flap and its edge upon which the flap is to be lapped projecting at the sides of the .belts, steam nozzles disposed to deliver' against the glue receiving surface of the projecting sealing flap and the enacting pro ect mg surface at'theopposite edge of the carton, said belts constituting guards for other portions of the carton, a sealing conveyer, aglue roll disposed at'the side ofsaid sealing conveyer to apply glue to the sealing fiap as the carton is carried along the conveyer, and means at the rear of sai glue roller for folding thecarton withits glued flap and coacting surface lapping.

2. In a machine for sealing waxed cartons having a sealing flap atone edge adapted to be lapped upon the opposite edge, the com bination of a carton feeding means com ris:

- ing pairs of opposed belts between whic the carton is carried in the flat with its sealing 'means for delivering glue to such surfaces and pressing t which the carton is carried in the fiat with its surfaces adapted to be glued together projecting at the sides of the belts, steam nozzles dis used to deliver against such surfaces, said elts constituting guards for other portions of the carton, a sealing conveyer, a glue applying means at the rear of said nozzles, and means at the rear of said glue applying means for folding the carton.

4. In a machine for sealing waxed cartons, the combination of a carton feedi meams comprising pairs of opposed belts etween which the carton is carried in the flat with its surfaces adapted to be glued together projecting at the sides of the belts, steam nozzles disposed to deliver against such surfaces, said belts constituting guards for other portions of the carton.

5. In a sealing machine, the combination of a carton conveyer adapted to carry a carton in the flat wit its surfaces adapted to be glued together projecting at the sides of the conveyer, steam nozzles disposed to deliver against such surfaces, said conveyer constituting a guard for the other portions of the 7. In a machine for sealing waxed cartons,

the combination of a carton conve 7' g means, means for subjecting the sur aces adapted to he lued together to steam, and means for app ying gas and folding the 8. In a machine for-sealing waxed cartons, the combination of a carton carrier, 0. hot fluid ainst the surfaces 0 the carton a apted to together, and means for applying em tocoactin be glu ther.

9. In a machine for sealing waxed cartons, the combination of a carton conveying means, means for removing or driving 0 a substantial portion of the wax from the surfaces adapted to be glued together by direct' jets of steam thereon, and means for up lying glue and folding the carton.

0. In a machine for sealing waxed cartons, the combination of a carton conve ing means means for heating the surfaces apted to he fglued together, removi' or driving off 0 a substantial portion 0 the wax' thereon, and means for applying glue and foldin the carton. A

11. he method of ma ma cartons consisting of removing a su ntial ortion .ofthewaxfromthesurfacestobeguedtogether by imp jets of steam thereon, and applying gue to such surfaces and pressin them to er.

12. e metho of sealing .wax cartons consisting of removing a substantial ortion of the wax from the surfaces to be ued together by impingin jets of hot fluid thereon, and applying g ue to such surfaces and pressin them to ether.

13. e meth of sealin waxed cartons consisting of heating the suraces to be glued together, removing a substantial ortion of the wax, applying glue thereto, an pressin such sur aces together.

n witness whereo I have hereunto set my hand and seal the presence of two witnesses.

FRED W. SUTHERLAND. [1,. s.] Witnesses:

- 'Fmmmcn O. GRANKE,

LOUIS-.W. Su'rmmnn. 

